Clutch-pulley.



J. MQSTAY & E. F. STEVENS. v

CLUTCH PULLEY.

APPLICATION FILED JULY 19, 1010.

989,274. Patented Apr. 11, 1911.

Inventor Attorneys JAMES MCSTAY AND EDWARD F. STEVENS, 0F CYGNET, OHIO.

CLUTCH-PULLEY.

Specification of Letters Patent.

Patented Apr. 11, 1911.

Application filed July 19, 1910. Serial No. 572,745.

To all whom 'it may concern:

Be it known that We, J AMES MCSTAY and EDWARD F. STEvnNs, citizens ofthe United States, residing at Cygnet, in the county of WVood, State ofOhio, have invented a new and useful Clutch-Pulley, of which thefollowing is a specification.

The present invention aims to improve the construction of clutch pulleyshown in our prior Patent No. 960,599, issued June 7, 1910, and theimprovements of the present invention are directed more especially tothe means for operating or rotating the clutch cam of the pulley.

In general, the invention aims to simplify the construction of thisoperating means of the device and render the same less likely to get outof order and more certain in its operation.

'With the above and other objects in view, the present inventionconsists in the general construction and arrangement of parts shown inthe accompanying drawings, in which,

Figure 1 is a vertical longitudinal sectional view through a pulleyconstructed in accordance with the present invention. Fig. 2 is a viewin front elevation thereof, parts being broken away. Fig. 3 is a sideelevation, parts also being broken away. Fig. 4: is a detail view inside elevation of a cam embodied in the structure.

In the drawings, the numeral 5 indicates the shaft upon which the clutchpulley embodying the present invention is mounted and secured upon thisshaft in any suitable manner is an elongated hub 6 upon which in turn,is fixed the driving member 7 of the clutch, this member being of theordinary friction type. Freely rotatable upon the elongated hub 6 is thedrlven member of the clutch indicated by the numeral 8 and this lattermember is in the form of a belt pulley, it being so constructed andarranged with respect to the member 7 as to cooperate therewith whenmoved to position against the said member. The hub of the member 8 isindicated by the numeral 9 and is formed with a circumscribing groove 10the function of which groove will be presently explained. The end of thehub 9 adjacent the groove 10 is plane and fitted upon the hub 6 with itsplane end against the said end of the hub 9 is the clutch cam of acollar having one 'end formed with cam portions 11 as in my aforesaidpatented structure.

There is secured upon the cam collar 10' above mentioned, a short barindicated by the numeral 12 and formed with a depending lug 13 locatedupon and projecting into the groove 10 in the hub of the pulley member 8of the clutch. The projection of this lug into the groove 10 serves tohold the cam collar against movement away from the said hub and at thesame time allows of rotation of the cam collar with respect to the hub.Outwardly of the collar 10 there is fixed upon the sleeve 6, by beinthreaded thereon as at 14 a second cam collar 15 having cam portions 16cooperating with the cam portions 11 of the first described collar andthis latter collar 15 is formed with a groove 17 which extends parallelto one of the faces 16 and into it projects a lug 18 formed at the outerend of the bar 12. At this point it will be readily understood thatshould the cam collar be rotated with respect to the cam collar 15toward the right in Fig. 3 of the drawings or in other words upwardly inFig. 2 of the drawings, the cam portions of the two collars willcooperate to force the collar 10 to the left in Fig. 1 of the drawingsand this movement of the collar will impart a corresponding movement tothe hub 9 and the pulley member 8 of the clutch thereby bringing thismember into cooperative relation with respect to the member 7. The camcollar 15, as will be observed from an inspection of Fig. 8 of thedrawings, is a split collar and is consequently to be firmly clampedupon the threaded end of the sleeve hub 6.

The improvements contemplated by the present invention are directed tothe means provided for rotating the cam collar 10 as above stated andthis means will now be specifically described.

The collar 10' is formed with an outstanding boss indicated by thenumeral 19 and this, at its upper end and in that face which ispresented to the right in Figs. 1 and 2 of the drawings, is formed withteeth indicated by the numeral 20. In a like manner, the cam collar isformed with an outstanding boss 21 upon which is pivoted a rock arm 22this arm at its pivoted end being enlarged and formed with teethindicated by the numeral 23, these teeth being in mesh with the teeth20. It will now be readily understood that by swinging the port adjacentthe shaft 5. This lever has a yoke 26 having pivotal .connection with aring or collar 27 fitted in a groove 28 formed in a collar 29 fixed uponthe shaft 5 beyond the threaded end of the sleeve hub 6. A bar 30 ispivoted at one end to the arm 22 and at its other end to a lug upon thecollar 29 so that when the handle end of the lever 24 is swung to theright in Fig. 2 of the drawings its yoke end 26 will be swung to theleft and the arm 22 will also be swung to the left producing the resultsabove described.

What is claimed is 1. In a clutch pulley, a driving member having a hub,a driven member rotatable upon the hub, a cam collar having limitedrotative movement upon the hub and having bearing against the saiddriven member, a cam collar fixed upon the hub and cooperating with thefirst mentioned collar, the first mentioned collar being provided withteeth, and an arm carried by the fixed cam collar and having teethmeshing with the teeth upon the first mentioned cam collar, the said armbeing adapted to be rocked where by to rotate the first mentioned camcollar.

2. In a clutch pulley, a driving member having a .hub, a driven memberrotatable upon the hub, a cam collar having limited rotative movementupon the hub and having bearing against the said driven member, a camcollar fixed upon the hub and cotiperating with the first mentionedcollar, the first mentioned collar being provided with teeth, and an armcarried by the fixed cam collar and having teeth meshing with the teethupon the first mentioned cam collar, the said arm being adapted to berocked whereby to rotate the first mentioned cam collar, and meanswhereby the arm may be so rocked, said means comprising a rotatablecollar, a

ring loosely fitted thereon, a lever pivoted to the ring, and an armconnected to the first mentioned arm and to the collar.

3. In a clutch pulley, a driving member having a hub, a driven memberhaving a hub and having lugs fitting in the grooves in the hub of thedriven member and in the groove in the said fixed shaft member, andmeans for imparting rotative movement to the said first mentioned camcollar.

4. In a clutch pulley, a driving member having a hub, a driven memberhaving a hub rotatably fitted upon the first mentioned hub, the hub ofthe said driven member being formed with a groove, a cam collar havinglimited rotative movement upon the hub of the driving member and havingbearing against the hub of the driven member, a cam collar fixed uponthe hub of the said driving member and cofiperating with the firstmentioned cam collar, the last mentioned cam collar being formed with acam screw, a bar secured upon the first mentioned cam collar and havinglugs fitting in the grooves in the hub of the driven member and in thegroove in the said fixed shaft member, and means for imparting rotativemovement to the first mentioned cam collar, the said means comprising aplurality of teeth upon the said first mentioned cam collar, and atoothed rock arm upon the last mentioned cam collar, the teeth of therock arm meshing with the teeth upon the first mentioned cam collar.-

In testimony that we claim the foregoing as our own, we have heretoaifixed our signatures in the presence of two witnesses.

JAMES MoSTAY. EDIVARD F. STEVENS.

l/Vitnesses CLELL SOLETHER, C. F. SoLE'rHnR.

Copies ofth is patent may be obtained for five cents each, by addressingthe F Commissioner of Patents, Washington, D. G.

